Shoplogix Availability Formula:
The Shoplogix Availability formula is simply the sum the uptime divided by the sum of all scheduled time. This formula is does not have any weighted factor, because it does not depend on any expected production rate. Instead it only measures whether machines are running or not.
Shoplogix Performance Formula:
This can also be rewritten as:
The Shoplogix Performance formula is weighted by time (the uptime duration of the job). This means jobs that run longer with more uptime have more weight.
Understanding OEE Runtime Hours:
The Numerator in the Shoplogix Performance formula is referred to as “OEE Runtime Hours”.
The OEE Runtime Hours can be interpreted as the “effective runtime” that would be required to produce the same amount if you were to have run at the expected rate. For example, if you had 50 hours of uptime, but only 20 hours of OEE Runtime Hours, this would be like saying “It took you 50 hours to do 20 hours worth of work”.
Shoplogix Quality Formula:
The Quality formula is also weighted by the duration of each job. In short, Shoplogix converts its calculation into “effective productive time” divided by “effective actual runtime”. This conversion acts as a way to calculate the ratio of ‘good' / ‘total’ while weighting by the duration of each job i.
SLX Formula Simplified:
SLX Formula Expanded:
Understanding OEE Productive Hours:
Note: The numerator in this case is referred to as “OEE Productive Hours”. This can be interpreted as the “effective productive time”. It’s just like the “OEE Runtime” value explained above, except the ‘productive time’ refers to the time it would take to produce the same “Good Production”, instead of just looking at “Total Production”.